Cold Sores and Canker Sores are the most common causes of sores on roof of mouth. Sore roof of mouth causes a great deal of pain and discomfort. Such sores are usually not considered contagious when caused by Canker Sores.
In order to determine if higher minimum wage leads to a higher unemployment two economic professors at Princeton University (David Card and Alan Krueger) conducted a study on minimum wage hikes with a focus on the New Jersey minimum wage hike in 1990. Card and Krueger compared unemployment and wages in New Jersey and Pennsylvania.
Making the world better, one answer at a time. Unions may affect the natural rate of unemployment via the effect on insiders and outsiders. Because unions raise the wage above the equilibrium level, the quantity of labor demanded declines while the quantity supplied of labor rises, so there is unemployment.